PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/12-16:42:50
G02     271.5          79.2                8.4 +/-    0.99       8.6 +/-    0.99  0.100 / 0.200
G05     169.1          23.1               11.1 +/-    1.88      22.7 +/-    1.88  0.130 / 0.310
G06     39.7           49.2                7.8 +/-    0.34      10.0 +/-    0.34  0.040 / 0.040
G12     320.1          59.9                8.4 +/-    0.84       9.5 +/-    0.84  0.030 / 0.050
G17     75.4           20.8                7.9 +/-    0.75      17.0 +/-    0.75  0.090 / 0.150
G19     65.9           31.8                8.4 +/-    0.96      14.1 +/-    0.96  0.090 / 0.130
G24     237.8          29.6                9.5 +/-    1.23      16.8 +/-    1.23  0.040 / 0.040
G25     317.3          18.6                8.5 +/-    2.11      19.4 +/-    2.11  0.040 / 0.040